package com.dr.inteceptors;

import com.dr.utils.JwtUtil;
import com.dr.utils.ThreadLocalUtil;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;

/**
 * @Auther: yangjianfeng
 * @Date: 2025/07/06 13:29
 * @Description:
 */
@Component
public class LoginInteceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request,
                             HttpServletResponse response,
                             Object handler) throws Exception {
        //令牌验证
        String token = request.getHeader("Authorization");
        //验证token
        try {
            //从redis中获取相同的token

            Map<String, Object> claims = JwtUtil.parseToken(token);

            //把业务数据存储到ThreadLocal中
            ThreadLocalUtil.set(claims);
            //放行
            return true;
        } catch (Exception e) {
            //http响应状态码为401
            response.setStatus(401);
            //不放行
            return false;
        }
    }

    @Override
    public void afterCompletion(HttpServletRequest request,
                                HttpServletResponse response,
                                Object handler, Exception ex) throws Exception {
        //清空ThreadLocal中的数据
        ThreadLocalUtil.remove();
    }
}
